Record card sensing device,申请号US19480001921-传众专利搜索

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发明名称	Record card sensing device
摘要
申请公布号	US2478275(A)	申请公布日期	1949.08.09
申请号	US19480001921	申请日期	1948.01.13
申请人	INTERNATIONAL BUSINESS MACHINES CORPORATION	发明人	JOHNSON REYNOLD B.
分类号		主分类号
代理机构		代理人
主权项
地址

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